Coffee-machine.



, Patented Oct. 31, 1911.

G. HBssDRlB-B.

COFFEE MACHINE.

APPLICATION FILED MAY 15, 1911.

S Ivan/enga?? GEORG HESSDRFER, .oF WRZBURG, GERMANY.

COFFEE-MACHINE.

Specification of Letters Patent.

Application led May l5, 1911.

Patented oct. 31', 1911.

Serial No. 627,280.

To all whom it may concern:

Be it known that I, GEORG .Hnssnizrnm a subject of the King of Bavaria,residing at lVrZburg, in the Kingdom of Bavaria, Germany, have inventedcertain new and useful Improvements in Cofi'ee-Machines, of which thefollowing is a specification.

This invention relates to a coffee-machine of that type in which thekettle oscillates automatically as soon as the water is boiling so thatthe boiling water is poured over the coffee, the ame of the heater beingextinguished at the same time7 by a lid which had been kept open by thesaid boiler.

In the accompanying drawings the improved coffee-machine is shown by wayof example.

Figure l is a front elevation. Fig. 2 is a section of Fig. 1, the heaterbeing emitted. Fig. 22t shows a constructional detail. Fig. 3 representsin section the lower part of the boiler. Fig. 4 shows the device whichmakes the boiler swing7 the lid being removed and the device being shownpartly in section.

The boiler is composed of two parts 1 and 2 which are connected by ahandle 4 screwed upon the threaded anges 3 of said parts. A cylinder 5fixed at the side of the lower part 2 of the boiler communicates throughan opening with a water chamber 6 arranged in said boiler part. In saidcylinder 5 a piston 7 is arranged which has a conical head 8 at theouter end of its rod. Vhen the boiler is suspended in the frame of thecoffee-machine, the conical head 8 is situated under a lever 9.

In the top plate of the water chamber 6 a valve 10 is provided which isnormally closed by means of the spring 11. A hand knob 12 at the upperend of a push rod serves for pushing back said valve so that the waterfrom the boiler can flow into the said water chamber 6 and into thecylinder 5. The boiler is pivotally mounted in the frame 13 by means ofthe said handle 4 and by means of a ournal 14 of the upper part 1engaging with an axle 15 which has a convenient slot 16.

The device which makes the boiler swing around, (Fig. 4) is inclosed ina flat casing 17 and consists of an angle lever 19 adapted to turnaround a pivot 18, of the hereinbefore mentioned lever 9 adapted toswing around a pivot 20, of a click 21 influenced by a spring 41, of theshaft 15 which is mounted in the bush 22 to which the crank handle 23 isfixed and of a spring 24 lixed with one end t0 said crank handle andwith the other end to the said bush 22.

In the frame 13 a rod 28 is movably mounted which is guided in a guidering 25, its movement being limited by the stop screw 27 projectingthrough the slot 26; a spring inclosed in a cylinder 29 serves formaintaining the rod in its normal position shown in Fig. 2. The rod 28has a nose 30 with which engages a pin 31 of the upper boiler partarranged directly above the journal 14 (Fig. 2a) so that when the boileris tilted over, said pin pushes the rod 28 down.

lAfter about one third of a revolution the pin 31 slides od the nose ofthe rod so that the latter immediately returns to its normal positionthrough the action of the spiral spring, a hammer 32 striking against abell to give a signal. In order to obtain a long signal the rod 28 canhave teeth with which engages a toothed wheel arranged between two bellsand carrying convenient hammers. A two-armed lever 34 pivotally mountedbelow the lower end of the rod bears with one arm againstsaid rod andwith its other arm against the lifted lid 35 of the heater 36 so thatwhen the rod 28 goes down said lid is closed and the flame ofthe burneris extinguished. The shaft 15 has a nipple 37 (Fig. 4) adapted to engagewith a notch 38 of the bush 22. When the spring 24 is under tension itretains the nipple 37 through the intermediary of the click 2l. Aregulating screw 39 serves for regulating the position of the lever 9.

The improved codec-machine operates as follows :WY hen the water beginsto boil the piston 7 is lifted by the pressure of the steam sothat itshead 8 pushes against the lever 9 which thus releases the lever 19. Thislever oscillates owing to the action of its spring and striking againstthe arm of the click 21 releases the nipple 37. The shaft 15 being thusreleased revolves under the action of the spring 24 and takes the boileralong by means of the square journal 14. The boiling water is thuspoured over the coffee contained inthe part 1 of the boiler. During thehalf revolution of the shaft 15 the nipple 31 acts upon the rod 28whereby the alarm signal is given and the flame is extinguished by theclosing of the lid 35. The rod 28 returns again to its normal position.l

The improved machine can, of course be used not only for preparingcoffee, but also for chocolate, tea and other beverages.

I claim l. An improved coffee-machine comprising in combination, aframe, a boiler composed of two parts revolubly mounted in said frame,the shaft for said boiler, a spring for rotating said shaft, a click forlocking said shaft, a nipple of said shaft with which engages saidclick, a lever for withdrawing said click from the nipple of the shaft,a spring acting upon said lever, a lever for releasing said springinfluenced lever, a water chamber in the lower boiler part, a cylinderfixed to said lower boiler part and communicating with said waterchamber, a piston in said cylinder serving to push against said leverwhen the water is boiling', a heater under the boiler, a lid for saidheater and means for closing the lid when the boiler swings around,substantially as described and shown and for the purpose set forth.

2. An improved coffee-machine comprising in combination, a frame, aboiler composed of two parts revolubly mounted in said frame, an armprojecting from the upper boiler part, a shaft for said boiler, a springfor rotating said shaft, means for locking said shaft and means forreleasing the locking means as soon as the water is boiling, a rodvertically mounted at the side of the boiler, a spring maintaining saidrod in normal position, a nose of said rod against which strikes saidarm of the boiler when the boiler swings around, ay hammer hinged tosaid rod and an alarm bell rung by said hammer, a heater under theboiler, the lid of said heater, a lever for maintaining the lid open, anarm of said lever eX- tending below said rod which in descending actsupon said arm and releases the lid so that it closes and e-Xtinguishesthe flame of the heater, substantially as described and shown and forthe purpose set fort-h.

In witness whereof I have hereunto set my hand in the presence of twowitnesses.

GEORG HEssDRrER.

lVitnesses:

RALPH WV. DoX,

ELISABETH HELLMUTH.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, '.D. C.

